Germanium disulfide or Germanium(IV) sulfide is the inorganic compound with the formula GeS2. It is a white high-melting crystalline solid. The compound is a 3-dimensional polymer, in contrast to silicon disulfide, which is a one-dimensional polymer. The Ge-S distance is 2.19 Å.
Isolation, production, reactions
Germanium disulfide was first found in samples of argyrodite. The fact that germanium sulfide does not dissolve in aqueous acid facilitated its isolation.6
Germanium disulfide is produced by treating a solution of germanium tetrachloride in a concentrated hydrochloric acid solution with hydrogen sulfide. It precipitates as a white solid.7
It is insoluble in water, it dissolves in aqueous solutions of sodium sulfide owing to the formation of thiogermanates:
GeS2 + Na2S → Na2GeS3Natural occurrence
Natural GeS2 is restricted to fumaroles of some burning coal-mining waste heaps.8
References
Johnson, O. H. (1952). "Germanium and its Inorganic Compounds". Chemical Reviews. 51 (3): 431–469. doi:10.1021/cr60160a002. /wiki/Doi_(identifier) ↩
Golubkov, A. V.; Dubrovskii, G. B.; Shelykh, A. I. (1998). "Preparation and properties of GeS2 single crystals". Semiconductors. 32 (7): 734–735. Bibcode:1998Semic..32..734G. doi:10.1134/1.1187494. S2CID 101832592. /wiki/Bibcode_(identifier) ↩
Zachariasen, W. H. (1936). "The Crystal Structure of Germanium Disulphide". Journal of Chemical Physics. 4 (9): 618–619. Bibcode:1936JChPh...4..618Z. doi:10.1063/1.1749915. /wiki/Bibcode_(identifier) ↩
Kulikova, L. F.; Lityagina, L. M.; Zibrov, I. P.; Dyuzheva, T. I.; Nikolaev, N. A.; Brazhkin, V. V. (2014). "High-pressure, high-temperature study of GeS2 and GeSe2". Inorg. Mater. 50 (8): 768–774. doi:10.1134/S002016851408010X. S2CID 98354736. /w/index.php?title=Inorganic_Materials&action=edit&redlink=1 ↩
Zachariasen, W. H. (1936). "The Crystal Structure of Germanium Disulphide". Journal of Chemical Physics. 4 (9): 618–619. Bibcode:1936JChPh...4..618Z. doi:10.1063/1.1749915. /wiki/Bibcode_(identifier) ↩
Winkler, C. (1886). "Mittheilungen über das Germanium". Journal für Praktische Chemie. 34 (1): 177–229. doi:10.1002/prac.18860340122. http://gallica.bnf.fr/ark:/12148/bpt6k90797z/f185.table ↩
P. W. Schenk (1963). "Germanium Disulfide". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2pages=723-724. NY,NY: Academic Press. ↩
"Unnamed (Ge Sulphide)". https://www.mindat.org/min-39607.html ↩